I’m having two different problems with DVDFAB 6 and my copy of The Dark Knight (a movie I know caused many issues upon its release).
If PathPlayer is enabled or disabled:
DVDFAB displays Reading/Writing Error messages upon startup. It will ask to Retry/Abort/Ignore/Ignore All, but eventually recognize the movie and allow me to setup a DVD to Mobile session.
However, the transcoding freezes at about 40% into the movie each time and crashes DVDFAB. The file left behind (mp4) will play and looks great, but audio is out of synch by a good 4 or 5 seconds.